Cinematograph target apparatus.



D. H. GORBIN & A. W. HARRIS. OINEMATOGRAPH TARGET APPARATUS.

APPLICATION FILED MAY 16,1914.

1,125,662. Patented Jan.19,1915.

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To atl whmiz'ma'y concerns Bait;- known that we; Dbn'enAs HAr'nns Genera and An'mnn Whitman r Harms, subjects-ofthe King of Great Britain, residing at 98 Kings Road, Erdi-ngton, Birmingham, in thecounty of Warwick, England, and Barley Dene, J afi'ray Road, Erdington, Birmingharn' aforesaid, respectively, have invented a new and useful Improvement in Cinematograph Target Apparatus; and we do hereby, declare" the following to be a full, clear, andexact description of the same,

Our invention comprises improvements in ci'nematograph target apparatus of the kind which is described in the prior Patent No. 1,027,371. p

In the specification N 0. 1,075,894 mechanism is shown whereby whena shot is fired a magnetic clutchin the driving train of the cinematograph normally energized is automatic'ally deenergized while simultaneously therewith a braking device is applied to said driving mechanism whereby motion of the,

cinemat'ograph is automatically arrested.

Said motion'arresting device in the prior specification is applied to the driving or beater-shaft of'the cinematograph which control the movement of the film, but 210-" cording to the present invention we provide means whereby in addition to the application of the brake to' thedriving or heatershaft a braking or r'n'otion arresting device is operated to arrest the motion of the spool boxes, z. e. the reels from and onto which the film is wound.

Referring to the drawings :-Figure 1 is I a diagrammatic view illustrating one form of the invention with the electrical connections for same. Figs. 2 and 3 are modified forms of braking devices. 7

In carryingvthis invention into practice as illustrated upon the accompanying drawings. the shaft 1 is shown as being" driven by the motor 2 by a belt 3 and magnetic clutch 4, this shaft 1 serving to control the movement of the film. As illustrated in the accompanying drawings the magnetic clutch 4. corresponds with the magnetic clutch 12-43 in the prior specification No. 1,075,894, and when a shot is fired this clutch is automatically 'deenergizedgin a similar manner to that described in the said prior specification. l i

The shaft 1 is provided with a drum 5 5 surrounded by a handbrake 6, one end of .specifi eaticaof Letters 'fat ent.

23. similar manner to the solenoids-illustrated, fitfimagnetically attracts the disk 2% con ducted to a spool shaft 25 the motion of which" is anchored while the other end is connected to armature 7 of the magnet 8.

Patented Jan. 19, 1915. a suaataaieaai'ayas; 1914 serial No. 838,005.

This magnet 8 corresponds with the magnet 3 described in the prior specification No. 1,075,894, and when energized will obviously attract the armature 7 applying the brake to the drum-5 the energizing of the magnet taking place in a similar manner to that of 'themagnet 3 described in the said prior specification.

As in the prior specification the mechanism. isso arranged that the cinematograph cannot be stopped when the film is moving for which purpose the shaft 1 carries the drum 9 coveredwith insulation 10 around .the greater part of its periphery and having a contact making portion 11 at one point. A switch arm 12 is provided in circuit with the magnet and when the switch for supply 'ing the magnetic circuit is closed in manner described in the prior specification and the contact arm 12 engages with the part 11 as the said part 11 rotates, the circuit will be finally complcted, thefarmature being attracted; and in order to retain the armature in its attracted condition the armature is provided With-a spring contact 13 engaging I a contact 14 which. makes a shunt circuit through the armature retainingthe brake in its applied condition.

taneously applied toboth spool boxes thus preventing movement of same owing to their own momentum after the driving mechanlsm at the cinematograph has been stopped.

At Fig. 2 a modified form of the braking device is shown in which the'magnet 20 con trols a pivoted armature 21 having a brakspool boxes 1'6.

At Fig. 3 a

Winding 22 on the spool shaft this winding 22 being connected to a non-rotatable disk When this winding is energized in which is thus automatically arrestei further form of braking device is shown embodying an electromagnetic ing'extremity 22 adapted to engage with the @9 What we claim then is 1. In cinematograph target a paratus, the combination of a cinematograp means for arresting the motion of the cinematograph when a shot is fired; a pair of s 001 boxes; and means for applying a bra 'ng action to said spool boxes when the cinemat ograph 1S stopped; for the purpose setforth. 4

In-cinematograph target apparatus,the

combination of a cinematograph; means for arresting the motion of'the cinematograph when a shot is fired; a pair of spool boxes; and a pair of electromagnetic braking devices one applied to each spool box so arranged. that when the cinematograph stopped the spool brakes are applied; for

the purpose set forth.

3.111 cinematograph target apparatus;

for energizing said electromagnet when av shot is fired; anarmature attracted when the magnet is energized; a spring contact device in circuit with the magnet; an insulated drum'adapted to make electrical contact with said spring contact device at one point so as to insure that the cinematograph will be stoppedonly when the film is not running;'a pair of spool boxes; and a pair of electromagneticbraking devices oneapplied to each spool box so. arranged that when the cinematograph is stopped the spool brakes are applied; for the purpose I set forth.

5, In cinematograph target apparatus; the combination 0 a cinematograph having a driving shaft; an .electromagnet; means for energizing said electromagnet when a shot is fired; an armature attracted when a spring contact the magnet is ener 'zed ma et; an up device 1n circuit with the sulated drum adapted" to ma e'electricai contact with said spring contact device at one point so as to insure that the cinematograph will be stopped only when the film is not running; a band brake connected to and actuated by the armature; a. contact 'dea vice carried by the armature for making a shunt circuit to maintain the braking pressure; a pair of spool boxes; and a pair of electromagnetic braking devices one applied to each spool box so, arranged that when the.

cinematograph is stopped the spool brakes are applied; for the purpose set forth.

6. In cinemato raph target apparatus, the combination 0 a cinematograph having a driving shaft; ahrake drum carried by said shaft; an electric motor for driving said cinematograph; an electromagnetic clutch intermediate between the shaft and the driving niotor;'an electromagnet; means for' 'energizing said electromagnet when a shot 'is-fired; an armature attracted when the magnet is energized; a spring contact device in circuit with the magnet; an insulated drum adapted to make electrical contact withsaid spring contact device at one point so as to insure that the cinematov,

graph will be stopped only when the film is v not running; a hand brake connected to and actuated by thearmature; a contact device carried by the armature for making a short circuit to maintain the brakin pressure; a pair 'of spool boxes; and a pair 6f electromagnetic braking devices one applied toeach spool box so arranged that when the cinematograph is stopped the. spool brakes are applied for the purpose-set forth.

In testimony whereof, we have signed our names to thisspecification in the presence of two subscribing witnesses.

DOUGLAS HAYNES CORBIN, ARTHUR WILLIAM HARRISL' Witnesses as to Douglas Haynes Corbin:

HAROLD J. C. Fonnns'mn, HERBERT-J. O. BAn'roX. 'Witnesses as to Arthur lVilliam. Harris:

FRANK H. LOGAN, e W. H; BERRIGAS. 

